7.4.4 Performing operations on the selected classes or the current class

You can operate on the selected node in the graph using the commands in the
Classes menu. If no node is selected, then the current class is operated on by the commands in this menu. The standard actions commands described in Performing operations on selected objects are available in this menu.

Choose
Classes > Browse Metaclass to select, and describe in the normal way, the class of the selected classes, or the current class.